ALKALOIDS OF ETHIOPIAN CALPURNIA AUREA SUBSP. AUREA

Article abstract of DOI:10.1016/S0031-9422(00)81306-0

Two novel alkaloids 3β,4α,13α-trihydroxylupanine and 3β,4α-dihydroxy 13α-O-(2'-pyrrolylcarbonyl)-lupanine (calpaurine) have been isolated from the leaves of Ethiopian Calpurnia aurea subsp. aurea.In addition, lupinine and epilupinine (both new for the genus), calpurmenine and calpurmenine pyrrolecarboxylic acid ester (previously found in subsp. sylvatica but not in subsp. aurea) have been isolated together with 13-hydroxylupanine, its tiglate and pyrrolecarboxylic acid esters (calpurnine), virgiline and virgiline pyrrolecarboxylic acid ester, alkaloids which have been reported previously from subsp. aurea. Key Word Index - Calpurnia aurea; Leguminosae; quinolizidine alkaloids; novel alkaloids; 3β,4α,13α-trihydroxylupanine; 3β,4α-dihydroxy 13α-O-(2'-pyrrolylcarbonyl)-lupanine (calpaurine).